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Stellar mass loss and galactic chemical evolution

Published online by Cambridge University Press:  12 April 2016

A. Serrano  and
M. Peimbert
A. Serrano
Affiliation:
Instituto de Astronomía, Universidad Nacional Autónoma de México
M. Peimbert
Affiliation:
Instituto de Astronomía, Universidad Nacional Autónoma de México

Extract

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We summarize here some of the results that we have obtained from chemical evolution models. In particular, we discuss those aspects related to stellar mass loss, helium production, a varying heavy element yield and the very light stars.

The observed value of the helium to heavy element abundance ratio ΔY/ΔZ is about 3 (e.g. Lequeux et al. 1979). First theoretical estimates gave ΔY/ΔZ= 0.4 (Hacyan et al. 1976).

Type
Session IX - Effects of Mass Loss on the Interstellar Medium
Information
International Astronomical Union Colloquium , Volume 59: Effects of Mass Loss on Stellar Evolution , 1981 , pp. 535 - 538
Copyright
Copyright © Reidel 1981

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